Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Statement of Cash Flows [Abstract]
Cash and cash equivalents at beginning of year	$ 601,602	$ 557,409	$ 569,115
Cash Flows from operating activities:
Net income	439,948	72,229	126,538
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	89,217	91,648	88,335
Amortization of debt discount and fees	23,513	29,266	25,352
Loss on extinguishment of debt	0	0	5,705
Stock-based compensation	47,561	43,588	43,460
Gain on investments, net	(6,320)	(15,737)	(5,984)
Non-cash restructuring and other charges	252	240	4,086
Tax impact of convertible notes interest	0	8,486	0
Impairment of property, plant and equipment	0	0	491
Deferred income taxes	(240,424)	(7,811)	(64,191)
Provisions (recoveries) for losses (gains) on receivables, net	215	(6,596)	(17,098)
Other non-cash items	3,063	3,196	1,039
Changes in operating assets and liabilities, net of effect of acquired businesses:
Receivables	45,630	76,785	71,375
Inventories	5,245	(6,820)	(26,528)
Prepaid expenses and other	(12,426)	20,053	(22,392)
Other assets	(4,902)	(2,220)	8,604
Accounts payable and accrued liabilities	17,523	(46,950)	60,281
Deferred revenue	(69,662)	(13,408)	62,531
Other long-term liabilities	(22,439)	(5,607)	(162,461)
Net cash provided by operating activities	315,994	240,342	199,143
Cash flows from investing activities:
Purchases of available-for-sale securities	(121,154)	0	0
Proceeds from the sale of available-for-sale securities	18,338	9,793	0
Proceeds from the maturity of available-for-sale securities	4,150	0	0
Proceeds from the sale of short-term investments	0	0	317
Proceeds from the sale of long-term investments	74	9,791	10,276
Proceeds from the sale of property, plant and equipment	0	0	900
Purchases of property, plant and equipment	(35,966)	(31,421)	(34,782)
Investment in venture capital partnerships and equity investments	(250)	(608)	(3,000)
Cash paid in business combinations and asset acquisitions, net of cash acquired	(66,432)	(44,052)	(258,823)
Net cash used for investing activities	(201,240)	(56,497)	(285,112)
Cash flows from financing activities:
Principal payments on receivable sale financing	(5,776)	(5,842)	(3,540)
Proceeds from issuance of 2015 notes	0	0	350,000
Payment of 2011 notes and 2013 notes	0	(150,000)	(192,364)
Payment of debt issuance costs	(1,372)	0	(10,532)
Purchase of 2015 notes hedges	0	0	(76,635)
Proceeds from termination of 2011 and 2013 notes hedges	0	0	311
Proceeds from sale of 2015 warrants	0	0	37,450
Payment of acquisition-related contingent consideration	(39)	0	0
Tax effect related to employee stock transactions allocated to equity	6,061	5,549	(9,458)
Proceeds from issuance of common stock	32,687	19,714	13,643
Stock received for payment of employee taxes on vesting of restricted stock	(15,728)	(14,225)	(8,940)
Purchases of treasury stock	0	0	(39,997)
Net cash provided by (used for) financing activities	15,833	(144,804)	59,938
Effect of exchange rate changes on cash and cash equivalents	(5,832)	5,152	14,325
Increase (decrease) in cash and cash equivalents	124,755	44,193	(11,706)
Cash and cash equivalents at end of year	$ 726,357	$ 601,602	$ 557,409